.nav {
    overflow: hidden;
}

.second_kill {
    position: absolute;
    left: 197px;
    top: 40px;
}

.second_kill1 {
    position: absolute;
    left: 183px;
    top: 40px;
    width: 1px;
    height: 32px;
    background-color: #b1191a;
}

.sk_list ul li,
.sk_con ul li {
    float: left;
}

.sk_list ul li a {
    display: block;
    height: 47px;
    line-height: 47px;
    padding: 0 30px;
    font-size: 16px;
    font-weight: 700;
    color: #000;
}

.sk_con ul li a {
    display: block;
    height: 49px;
    line-height: 49px;
    padding: 0 20px;
    font-size: 14px;
}

.sk_con ul li:last-child a::after {
    content: '\e91e';
    font-family: 'icomoon';

}

.sk_bd li {
    overflow: hidden;
    float: left;
    margin-left: 13px;
    width: 290px;
    height: 460px;
    border: 1px solid transparent;
}

.sk_bd li:nth-child(4n) {
    margin-left: 0
}

.sk_bd li:hover {
    border: 1px solid #b1191a;
}